Small enough to crouch inside, built without mortar in the ancient drystone tradition, and partly rebuilt at some point in its life, it is the kind of thing that is easy to walk past without registering what you are looking at. Drystone hut sites like this one were constructed by laying stones carefully against one another so that their weight and fit alone hold the walls together, a technique used across Ireland from prehistory well into the early medieval period.

The structure at Lios Deargáin was recorded as part of the 1986 Corca Dhuibhne archaeological survey of the Dingle Peninsula, a thorough inventory of the region's archaeological landscape compiled by J. Cuppage and published under the title 'Corca Dhuibhne: Dingle Peninsula Archaeological Survey'. That survey catalogued a remarkable density of ancient remains across the peninsula, reflecting centuries of continuous human activity in an area that remained relatively isolated from later development. The hut at Lios Deargáin is one of hundreds of such small structures recorded across the area, though its position on a steep slope at some altitude suggests it may have been associated with seasonal activity, perhaps the grazing of animals on higher ground during summer months, a practice known in Ireland as transhumance or booleying.